Apparatus for grinding the tips of injection needles
Abstract
Abstract AN APPARATUS FOR GRINDING THE TIPS OF INJECTION NEEDLES WHICH ARE USED IN HYPODERMIC SYRINGES. THE APPARATUS IS OF THE TYPE WHEREIN ELECTROLYTIC GRINDING OF THE NEEDLE TIPS TAKES PLACE WHILE THE NEEDLES ARE HELD AND GROUND WITH A GRIDING DISC DURING FEEDING OF THE ELECTROLYTE TO THE GRINDING AREA, THE APPARATUS INCLUDING THE REQUIRED ELECTRICAL STRUCTURE. A HOLDING MEANS IS PROVIDED FOR HOLDING A PLURALITY OF NEEDLES SIMULTANEOUSLY DURING SIMULTANEOUS GRINDING OF THE TIPS THEREOF, AND A FEEDING MEANS AUTOMATICALLY FEEDS A PLURALITY OF NEEDLES TO THE HOLDING MEANS SO THAT A PLURALITY OF NEEDLES WILL BE SIMULTANEOUSLY HELD THEREBY. A CONTROL MEANS CONTROLS THE MOVEMENT OF THE HOLDING MEANS AND A GRINDING MEANS ONE RELATIVE TO THE OTHER SO AS TO BRING ABOUT THE GRINDING OPERATIONS, AND A REMOVING MEANS IS PROVIDED FOR REMOVING THE FINISHED NEEDLES FROM THE HOLDING MEANS.
Inventors
- 👤 Karlheinz Derwall
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |